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https://doi.org/10.31803/tg-20201113132539

Calibration of Undrained Shear Strength Partial Factor Using Probability Theory

Filip Dodigović ; Faculty of Geotechnical Engineering, University of Zagreb, Hallerova aleja 7, 42000 Varazdin, Croatia
Krešo Ivandić ; Faculty of Geotechnical Engineering, University of Zagreb, Hallerova aleja 7, 42000 Varazdin, Croatia
Božo Soldo ; University North, Department of Civil Engineering, Jurja Križanića 31b, 42000 Varaždin, Croatia
Kristijan Grabar orcid id orcid.org/0000-0002-2209-4509 ; SPP d.o.o., Davora Trstenjaka 3, 42000 Varaždin, Croatia


Puni tekst: engleski pdf 2.644 Kb

str. 8-15

preuzimanja: 428

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Sažetak

Design in accordance with Eurocode 7 applies the partial factors of geotechnical parameters to take into account uncertainties of various sources. The prescribed values of partial factors are unique, even though the degree of uncertainty can vary significantly. This can lead to an unequal reliability level of structures designed using the same procedures and methods. This paper analyses the influence of undrained shear strength variability on the reliability index (β), using reliability theory and statistical methods. Analyses were performed in the case of a shallow footing designed in accordance with Eurocode 7, design approach 3. It is shown that reliability indexes of a shallow footing could be lower than the target values prescribed in Eurocode. To meet these values, additional elaboration and calibration of undrained shear strength partial factor (γcu) was proposed.

Ključne riječi

Eurocode 7; geotechnical design; partial factor; reliability analysis; uncertainty; undrained shear strength

Hrčak ID:

271921

URI

https://hrcak.srce.hr/271921

Datum izdavanja:

4.2.2022.

Posjeta: 1.102 *